excerpt from The Best Mind Since Einstein - Richard Feynman

Richard Feynman:  

I have approximate answers, possible beliefs and different degrees of certainty about different things, but I’m not absolutely sure of anything, and of many things I don’t know anything about.  Such as whether it means anything to ask about why we are here.  But I don’t have to know any answer…I don’t feel frightened by not knowing things…like whether or not we are alone or lost in the mysterious universe without having a purpose…

…which is just the way it is, as far as I can tell.